I have one of these pedals you are inquiring.I think it is from ’72-’74.I purchased it in 1982.I barely used it back then and hardly use it now as for any gigs or recording I do now,I just play dry.I am starting to check other sounds out though and will go with EH products based on the fact that this pedal is getting up there in years and is still functioning perfectly.Other musicians I have spoken to on the sound shaping subject usually mention EH products as completely reliable and bang on for sound.Have you had any luck finding one?